Coloring paper

ABSTRACT

A coloring book and coloring roll having a coloring sheet with a printed image on one surface is substantially visually imperceptible under normal viewing conditions, such as when viewed at a non-coloring distance using a standard incandescent light source.

CROSS-REFERENCE TO RELATED APPLICATIONS

Not Applicable.

STATEMENT REGARDING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT

Not Applicable.

FIELD OF THE INVENTION

The present invention is directed to coloring paper, and is morespecifically directed to a coloring sheet having a coloring image thatis relatively faint or otherwise substantially visually imperceptibleunder normal viewing conditions.

DESCRIPTION OF RELATED ART

Conventional coloring paper comprises one or more printed images on asubstrate with specific areas intended to be colored or painted by theuser. Conventional coloring paper is usually incorporated into coloringbooks, coloring desk and roll assemblies, and the like. Various types ofcoloring books have long been known to those skilled in the art. Morerecently, “coloring desks” adapted to receive and hold rolls of coloringpaper have been developed. Examples of such coloring desks include thosemanufactured by Wrebbit (e.g., the Cailou Refillable Coloring Desk),Family On Board (e.g., Color'n Roll® Coloring Desk), Tara Toys (e.g.,the Barbie Rolling Art Desk), and Colorama Creations (e.g., theRolocolor Coloring Desk). The coloring roll has a series of printedimages for coloring or painting.

In conventional coloring paper, the images are usually comprised ofrelatively wide dark black lines that form an outline to be colored. Asa result, even after the coloring paper is colored, the dark outlinesremain a prominent part of the overall colored image. In addition, it isclear to an observer that the colored image was not colored byfree-hand.

BRIEF SUMMARY OF THE INVENTION

An object of the present invention is to provide coloring paper whichpermits the colored artwork to appear to be colored free-hand to anobserver.

Another object of the present invention is to provide a coloring deskand roll assembly using the coloring paper of the present invention.

The present invention is directed to a coloring sheet that may be usedby itself or incorporated into a coloring book or coloring roll, whereinthe coloring sheet has a coloring image that is substantially visuallyimperceptible when viewing the coloring surface of the sheet at anon-coloring distance using a white incandescent light source. In thismanner, the coloring image is visible to the person coloring the paper,but substantially invisible to viewers of the paper that are areasonable distance away, such as about an arm's length away. The netresult is that the casual viewer more than about an arm's length awayfrom the sheet cannot see the coloring image to an appreciable extent,such that it appears the colored image was created free hand.

The coloring image may be produced in a variety of ways. The image maybe comprised of faint lines produced by printing the image on thecoloring surface using an ink extender or by screening the coloringlines. The image may also be formed by printing the image on the surfaceopposite the coloring surface in a coloring book or roll so that itappears substantially imperceptible when viewing the coloring surface.In addition, the image may be comprised of a color that is substantiallyvisually imperceptible when viewed using a standard white incandescentlight source but is perceptible when viewed through a colored filter.The image may also be comprised of an “invisible ink,” such as anultraviolet or infrared ink that is only visually perceptible whenexposed to an appropriate non-incandescent light source, such as anultraviolet or infrared light source. The image may also be comprised ofa “glow-in-the-dark” or phosphorescent ink.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view of a coloring book having a coloring sheetin accordance with a preferred embodiment of the present invention.

FIG. 2 is a top plan view of the coloring sheet shown in FIG. 1.

FIG. 3 is a perspective view of a coloring desk and coloring rollassembly in accordance with a preferred embodiment of the presentinvention.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

A coloring book made in accordance with a preferred embodiment of thepresent invention is represented generally by the numeral 10 in FIG. 1.Coloring book 10 comprises a plurality of flat, planar coloring sheets20. The coloring sheets may be formed of any suitable material forpurposes of coloring and may be formed of a single layer of material ormultiple layers (e.g. a laminate). Preferably, the coloring sheets aremade of paper or other cellulose based materials. The coloring sheet mayalso include one or more coatings as is known in the art to improve thecharacteristics of the sheet and/or the coloring image. For purposes ofthis invention, the term “coloring” encompasses the application of colorand/or graphics via any means known in the art including crayons, paint,chalk, colored pencils, charcoal and stickers.

Sheets 20 are bound to one another along a margin, preferably the topmargin 26, to form a pad. Coloring book 10 also includes a top cover 12(which is raised in FIG. 1) and bottom cover 14. Staples, adhesive,fasteners, or other book binding methods well known to those skilled inthe art are used to secure the sheets to one another along the margin,and to secure the sheets to the top and bottom covers 12, 14. Thecoloring sheets and coloring book may be any suitable size or shape, butare preferably rectangular or square ranging in size from about 6 to 12inches wide by about 8 to 20 inches long, and are more preferably about8 inches wide by about 11 inches long.

To facilitate removal of a portion of sheet 20 from the pad, aseparation line 40 is disposed adjacent top margin 26. This separationline may be formed by any means known in the art for enabling a portionof the sheet to be separated from the remainder of the sheet in arelatively easy manner and a clean straight line. Preferably, theseparation line is formed by perforations or via die cut or laser cutlines of weakness as is known in the art.

Looking to FIG. 2, coloring sheet 20 has a coloring surface 22, anopposite surface 24, a top margin 26, a bottom margin 27, and two sidemargins 28. A coloring image 23 is printed on at least one surface ofsheet 20 and is substantially visually imperceptible when viewingcoloring surface 22 at a non-coloring distance using a whiteincandescent light source.

A “non-coloring distance” means that the viewer is more than about anarm's length from the surface having the image printed thereon such thatthe viewer cannot color the image because the viewer is too far away.Typically, the non-coloring distance is greater than about 18 inches,and is usually about 24 to 36 inches. A “white incandescent lightsource” means a conventional white light bulb having a tungsten filamentthat is housed inside a glass sphere. Suitable incandescent bulbs areavailable in various sizes including “60 watt,” “75 watt,” and “100watt” and may be purchased from a variety of sources including theGeneral Electric Company.

Although the coloring image 23 is illustrated in the figures with a“grey line” in order to depict the image as being lighter thanconventional coloring images, it will be appreciated that the image isnot actually grey but is instead substantially visually imperceptiblewhen viewed at a non-coloring distance using a white incandescent lightsource.

The coloring image 23 may be printed on the coloring surface 22, on theopposite surface 24, or on both surfaces 22, 24. More specifically, itis possible to print the coloring image 23 on the coloring surface 23 soit is substantially visually imperceptible when viewing the coloringsurface 22 at a non-coloring distance using an incandescent white lightsource and to print a second coloring image (not shown in the drawings)on the opposite surface 24 so that the second coloring image issubstantially visually imperceptible when viewing the opposite surfaceat a non-coloring distance using an incandescent white light source.

In one embodiment of the present invention, coloring image 23 comprisesfaintly visible coloring lines printed on coloring surface 22. Thesefaint lines are visually perceptible at a coloring distance away fromthe paper (usually less than about 18 inches, and preferably at about 6to 12 inches), but are substantially imperceptible at a non-coloringdistance away from the paper. In other words, the printed coloring imageis visible to the person coloring the paper, but substantially invisibleto viewers of the paper that are a reasonable distance away, such asabout an arm's length away. The net result is that the coloring image 23“disappears” from view except under close and careful scrutiny. Thecasual viewer more than about an arm's length away from the paper cannotsee the coloring image to an appreciable extent.

The faintly visible coloring lines of the coloring image 23 may beachieved using a variety of methods well known to those skilled in theart. In one embodiment, the faint visible coloring lines are produced byusing ink extender. Although the ink extender may be mixed with asuitable ink (e.g., an ink having a black or bluish hue and the like),the paper is preferably printed solely with ink extender. A preferredink extender is commercially available from Water Ink Technologies(Charlotte, N.C.) under Product No. WVG000101. The resulting faintlyvisible coloring lines generally create a “water-marked” image. It willbe appreciated that numerous methods of producing such “water-marked”images are known to those skilled in the art.

Alternatively, the faintly visible coloring images are achieved asgenerally set forth in Pitts et al., U.S. Pat. No. 5,595,829, which isincorporated herein by reference. More specifically, the image 23 may beproduced by preparing the printing plate by exposure behind about 3 to30% screen, and preferably a 5 to 10% screen. Thus, only about 5 to 10%of the exposure is preferably applied to the plate that would normallybe applied to achieve dark lines. Then, the coloring surface 22 of thepaper is printed with a suitable ink. The ink is preferably composed ofa 50/50 mixture of PMS silver (Pantone® 877) and opaque white. Thiscolor of ink, printed with the about 5 to 10% exposed plate, results inthe desired visual character of the coloring image.

When the faintly visible coloring image 23 is made using ink extender orby screening the coloring lines, the faintly visible coloring image isbest seen by placing a dark sheet of paper (not shown) underneath sheet20 (i.e., against the opposite surface 24). Thus, the sheet 20 ispreferably thin enough so that the dark paper enhances the viewer'sperception of the faintly visible coloring image 23 when placedunderneath sheet 20.

In another embodiment, coloring image 23 is achieved by printing thecoloring image 23 on the opposite surface 24 of the paper andincorporating sheet 20 into a coloring book such that the coloringsurface is presented face up for use. In this instance, coloring surface22 is preferably substantially free of markings in the areascorresponding to where the coloring image 23 is printed on the oppositesurface 24 so as to not interfere with viewing the image 23 whencoloring the paper. When viewing the coloring surface 22 at anon-coloring distance, the coloring image 23 on the opposite surface 24is substantially visually imperceptible. However, when viewing thecoloring surface 22 at a distance for coloring the image (about an arm'slength away or less), the coloring image 23 is visibly perceptiblethrough the paper. It will be appreciated that in this embodiment, theplacement of a dark sheet of paper underneath the paper 20 (i.e.,against the opposite surface) will interfere with viewing the coloringimage 23.

When the coloring book is produced by printing coloring image 23 onopposite surface 24 for coloring on the coloring surface 22, the book ispreferably printed with or is accompanied by instructions which indicatethat the coloring surface 22 is to be colored. These instructions, forexample, may be in the margin of the coloring surface 22 or may be inthe packaging for the book.

In another embodiment, the printed coloring image 23 which issubstantially visually imperceptible at a non-coloring distance using awhite incandescent light source is produced by printing coloring surface22 with a color that is visibly enhanced when subjected to a coloredlight source or filter. Preferably, the printed coloring image iscomprised of a yellow ink that is substantially visually imperceptibleat a non-coloring distance using a white incandescent light source butis readily perceptible when the yellow image is viewed using a bluelight source or filter. Suitable yellow inks include Pantone® yellow orprocess yellow. The blue filter is preferably comprised of a thinplastic that is fashioned into viewing glasses (not shown) such that thefilter comprises the lenses of the glasses. Alternatively, the yellowinks can become perceptible when the inks are viewed using a “blue”bulb—i.e., a light bulb that emits primarily a blue color.

In yet another embodiment, coloring image 23 is produced using aninvisible ink on coloring surface 22. Invisible inks are traditionallydefined to involve a broad class of ink formulations which cannot beseen by the unaided eye when applied to a substrate and viewed with“natural” light (e.g., light from the sun) or light from conventionalwhite incandescent lamps and the like. These light forms (as well asother forms which are normally used for general illumination purposes inhomes, businesses, and the like) are collectively characterized as“white” light which involves a combination of all the various coloredlight fractions which fall within a wavelength range of about 300-700mm. Under these illumination conditions, the ink compositions areessentially colorless. Only after illumination with other lightwavelengths outside the visible spectrum do the printed coloring imagesbecome visible to the observer.

A number of invisible inks that are commercially available, many ofwhich are responsive to ultraviolet light or infrared range. See, e.g.,U.S. Pat. No. 5,569,317 (ultraviolet) and U.S. Pat. Nos. 5,611,958 and5,766,324 (infrared). The present invention preferably uses a so-calledultraviolet ink that fluoresces when subjected to an ultraviolet lightsource (such as a “black light”). Such ultraviolet markings used inconjunction with ultraviolet light provide a dramatic effect, since thecoloring image, which is originally seemingly invisible in visible ornormal light, becomes brightly fluorescent and visible under ultravioletradiation. A preferred ultraviolet ink is commercially available fromCraig Adhesives (Newark, N.J.) as Product No. 6933N2.

In another embodiment, coloring image 23 may be produced using aphosphorescent ink on the coloring surface 22. In general, suchphosphorescent inks are substantially invisible in normal lightingconditions but “glow in the dark” after an illuminating source has beenremoved because the atoms remain in an excited state. A preferredphosphorescent ink is commercially available from Craig Adhesives underProduct No. 89108A.

It will be appreciated that coloring image 23 may be of any desirable orfashionable form (such as a tree, rabbit, Power Ranger®, or Pokemon®character) known to those skilled in the art. It will also beappreciated that the coloring image may include both solid outlinedimages (such as those shown in FIG. 2), color-by-number, orpaint-by-number images. In addition, coloring images in which the imageis “colored” by placing an adhesive sticker having a desired design orcolor onto the sheet as outlined by the coloring image 23 are within thescope of the present invention.

Once colored, the colored image generally appears to be drawn free-handbecause the image outline is substantially imperceptible to thoseviewing the image at a non-coloring distance with a standard whiteincandescent light source. It will be appreciated that the linesthemselves may be colored to further the impression that the image wasdrawn free-hand when viewed at both a coloring distance and non-coloringdistance.

It should be understood that the coloring image of the presentinvention, namely a coloring image that is substantially visuallyimperceptible at a non-coloring distance using a white incandescentlight source may be utilized in conjunction with any type of coloringsheet, coloring book, coloring roll or the like requiring a graphic orimage for coloring. In a preferred embodiment, the coloring image of thepresent invention may be used as the coloring image or the sticker imagedisclosed in Applicant's co-pending patent application Ser. No. ______entitled “Coloring Paper Having Adhesive” filed on the same date of thisapplication, which co-pending application is incorporated herein in itsentirety.

Another embodiment of the coloring sheet in accordance with the presentinvention is shown in FIG. 3. In this embodiment, the coloring sheet isin the form of a roll 120 utilized in a coloring desk and roll assembly100. Roll 120 comprises a roll of sheet like material suitable forpurposes of coloring and is preferably formed of paper or othercellulose based materials. The roll may comprise a single layer ormultiple layers of material and may be coated as is known in the art toimprove certain characteristics of the roll and/or coloring image. Roll120 has one or a series of printed coloring images 123 thereon. Theprinted coloring image 123 is substantially visually imperceptible whenviewed at a non-coloring distance using a white incandescent lightsource as discussed above. The coloring image 123 may be one longcontinuous image or a series of separate periodically spaced images.

The exemplary coloring desk 110 shown in FIG. 3 is manufactured by RoseArt Industries., Inc, but those skilled in the art will recognize thatvarious other desks may be used with the coloring paper of the presentinvention. The portable desk 110 includes a substantially planarcoloring surface, a coloring instrument organizer, and at least onecoloring roll receiving portion 116. The coloring roll receiving portionincludes two projections (not shown) which extend from the inner surfaceof the sides of the desk 110. These projections removably engage thecoloring roll so that portions of the roll can be dispensed onto thecoloring surface through one or more openings 119 as desired.

As shown in FIG. 3, the coloring roll 120 of present invention has anextended coloring surface 122. The coloring roll preferably has a lengthof about 12 to 40 feet, more preferably about 16 to 20 feet, and a widthof about 4 to 16 inches, even more preferably about 11 inches., Tofacilitate removal of a portion of the roll 120, separation lines (suchas a perforation line) 140 are periodically disposed along the roll 120.The separation lines are preferably located between each of the seriesof printed coloring images 123 (e.g., between the hippopotamus and pigprinted coloring images shown in FIG. 3).

While specific embodiments have been shown and discussed, variousmodifications may of course be made, and the invention is not limited tothe specific forms or arrangement of parts and steps described herein,except insofar as such limitations are included in the following claims.Further, it will be understood that certain features andsub-combinations are of utility and may be employed without reference toother features and sub-combinations. This is contemplated by and iswithin the scope of the claims.

1. A coloring sheet having a coloring surface for coloring and anopposite surface, said sheet having a printed coloring image on saidcoloring surface, wherein said coloring image is substantially visuallyimperceptible when viewing the coloring surface with the coloring imagethereon at a non-coloring distance using a white incandescent lightsource.
 2. The coloring sheet of claim 1 wherein said printed coloringimage comprises faintly visible coloring lines that are substantiallyvisually imperceptible at a non-coloring distance.
 3. The coloring sheetof claim 2 wherein said printed coloring image is printed with inkextender on said coloring surface.
 4. The coloring sheet of claim 3wherein said image is also printed with ink.
 5. The coloring sheet ofclaim 2 wherein said printed image is printed on said coloring surfaceusing a plate exposed with about a 5 to 10% screen.
 6. The coloringsheet of claim 1 wherein said printed coloring image is printed on saidcoloring surface with an invisible ink.
 7. The coloring sheet of claim 6wherein said invisible ink is perceptible when exposed to either anultraviolet light or infrared light source.
 8. The coloring sheet ofclaim 1 wherein said printed coloring image on said coloring surface isprinted with a phosphorescent ink.
 9. The coloring sheet of claim 1 saidcoloring sheet has a repositional pressure sensitive adhesive on atleast a portion of one surface.
 10. The coloring sheet of claim 9wherein said adhesive is on said opposite surface.
 11. The coloringsheet of claim 10 wherein said adhesive is disposed along at least onemargin of said opposite surface.
 12. The coloring sheet of claim 1wherein said coloring image is selected from the group consisting of asolid outlined image, a paint-by-number image, and a color-by-numberimage.
 13. The coloring sheet of claim 1 wherein a release coating ispositioned between at least a portion of said coloring surface and saidcoloring image.
 14. The coloring sheet of claim 1 wherein said oppositesurface has a second coloring image printed thereon.
 15. The coloringsheet of claim 14 wherein said second coloring image is substantiallyvisually imperceptible when viewing the opposite surface with saidsecond coloring image thereon at a non-coloring distance using a whiteincandescent light source.
 16. A coloring book comprising: a pluralityof coloring sheets bound along a margin to form a pad, wherein each ofsaid coloring sheet has a coloring surface and an opposite surface; andwherein at least one sheet has a printed coloring image for coloring onits coloring surface, and wherein said coloring image is substantiallyvisually imperceptible when viewing the coloring surface having thecoloring image at a non-coloring distance using a white incandescentlight source.
 17. The coloring book of claim 16 wherein said printedcoloring image comprises faintly visible coloring lines that aresubstantially visually imperceptible at a non-coloring distance.
 18. Thecoloring book of claim 17 wherein said printed coloring image is printedwith ink extender on said coloring surface.
 19. The coloring book ofclaim 18 wherein said image is also printed with ink.
 20. The coloringbook of claim 17 wherein said printed image is printed on said coloringsurface using a plate exposed with about a 5 to 10% screen.
 21. Thecoloring book of claim 16 wherein said printed coloring image is printedon said coloring surface with an invisible ink.
 22. The coloring book ofclaim 21 wherein said invisible ink is perceptible when exposed toeither an ultraviolet light or infrared light source.
 23. The coloringbook of claim 16 wherein said printed coloring image on said coloringsurface is printed with a phosphorescent ink.
 24. The coloring book ofclaim 16 said coloring sheet has a repositional pressure sensitiveadhesive on at least a portion of one surface.
 25. The coloring book ofclaim 24 wherein said adhesive is on said opposite surface.
 26. Thecoloring book of claim 25 wherein said adhesive is disposed along atleast one margin of said opposite surface.
 27. The coloring book ofclaim 16 wherein said coloring image is selected from the groupconsisting of a solid outlined image, a paint-by-number image, and acolor-by-number image.
 28. The coloring book of claim 16 wherein arelease coating is positioned between at least a portion of saidcoloring surface and said coloring image.
 29. The coloring book of claim16 wherein said opposite surface of said at least one sheet has a secondcoloring image printed thereon.
 30. The coloring book of claim 29wherein said second coloring image is substantially visuallyimperceptible when viewing the opposite surface with said secondcoloring image thereon at a non-coloring distance using a whiteincandescent light source.
 31. A coloring roll comprising: a sheethaving a coloring surface and an opposite surface, and wherein saidcoloring surface has at least one printed coloring image for coloring onthe coloring surface; and wherein said coloring image is substantiallyvisually imperceptible when viewing the coloring surface at anon-coloring distance using a white incandescent light source.
 32. Thecoloring roll of claim 31 wherein said printed coloring image comprisesfaintly visible coloring lines that are substantially visuallyimperceptible at a non-coloring distance.
 33. The coloring roll of claim32 wherein said printed coloring image is printed with ink extender onsaid coloring surface.
 34. The coloring roll of claim 33 wherein saidimage is also printed with ink.
 35. The coloring roll of claim 32wherein said printed image is printed on said coloring surface using aplate exposed with about a 5 to 10% screen.
 36. The coloring roll ofclaim 31 wherein said printed coloring image is printed on said coloringsurface with an invisible ink.
 37. The coloring roll of claim 36 whereinsaid invisible ink is perceptible when exposed to either an ultravioletlight or infrared light source.
 38. The coloring roll of claim 31wherein said printed coloring image on said coloring surface is printedwith a phosphorescent ink.
 39. The coloring roll of claim 31 saidcoloring roll has a repositional pressure sensitive adhesive on at leasta portion of one surface.
 40. The coloring roll of claim 39 wherein saidadhesive is on said opposite surface.
 41. The coloring roll of claim 40wherein said adhesive is disposed along at least one margin of saidopposite surface.
 42. The coloring roll of claim 31 wherein saidcoloring image is selected from the group consisting of a solid outlinedimage, a paint-by-number image, and a color-by-number image.
 43. Thecoloring roll of claim 31 wherein a release coating is positionedbetween at least a portion of said coloring surface and said coloringimage.
 44. The coloring roll of claim 31 wherein said opposite surfacehas a second coloring image printed thereon.
 45. The coloring roll ofclaim 44 wherein said second coloring image is substantially visuallyimperceptible when viewing the opposite surface with said secondcoloring image thereon at a non-coloring distance using a whiteincandescent light source.
 46. A coloring desk and roll assemblycomprising: a coloring desk having a substantially planar coloringsurface and adapted to maintain a coloring roll; and a coloring roll,said coloring roll comprising a sheet having a coloring surface forcoloring and an opposite surface; and said coloring roll having at leastone printed coloring image for coloring on said coloring surface,wherein said coloring image is substantially visually imperceptible whenviewing the coloring surface at a non-coloring distance using a whiteincandescent light source.
 47. The coloring desk and roll assembly ofclaim 46 wherein said printed coloring image comprises faintly visiblecoloring lines that are substantially visually imperceptible at anon-coloring distance.
 48. The coloring desk and roll assembly of claim47 wherein said printed coloring image is printed with ink extender onsaid coloring surface.
 49. The coloring desk and roll assembly of claim48 wherein said image is also printed with ink.
 50. The coloring deskand roll assembly of claim 47 wherein said printed image is printed onsaid coloring surface using a plate exposed with about a 5 to 10%screen.
 51. The coloring desk and roll assembly of claim 46 wherein saidprinted coloring image is printed on said coloring surface with aninvisible ink.
 52. The coloring desk and roll assembly of claim 51wherein said invisible ink is perceptible when exposed to either anultraviolet light or infrared light source.
 53. The coloring desk androll assembly of claim 46 wherein said printed coloring image on saidcoloring surface is printed with a phosphorescent ink.
 54. The coloringdesk and roll assembly of claim 46 said coloring roll has a repositionalpressure sensitive adhesive on at least a portion of one surface. 55.The coloring desk and roll assembly of claim 54 wherein said adhesive ison said opposite surface.
 56. The coloring desk and roll assembly ofclaim 55 wherein said adhesive is disposed along at least one margin ofsaid opposite surface.
 57. The coloring desk and roll assembly of claim46 wherein said coloring image is selected from the group consisting ofa solid outlined image, a paint-by-number image, and a color-by-numberimage.
 58. The coloring desk and roll assembly of claim 46 wherein arelease coating is positioned between at least a portion of saidcoloring surface and said coloring image.
 59. A coloring book assemblycomprising: a plurality of coloring sheets bound along a margin to forma pad, wherein each of said coloring sheets has a top surface facing thefront of said book for coloring a printed coloring image and a bottomsurface facing the back of said book; and wherein at least one sheet hassaid printed coloring image on said bottom surface.
 60. The coloringbook assembly of claim 59 wherein the top surface is substantially freeof markings where the coloring image is printed on the bottom surface soas not to substantially interfere with a user perceiving the image whenviewing the top surface at a coloring distance away from the sheet. 61.The coloring book assembly of claim 59 further comprising a top andbottom cover affixed to said pad.
 62. The coloring book assembly ofclaim 59 further comprising instructions for coloring the top surface.63. The coloring book assembly of claim 62 wherein said instructions areprinted on the top surface.
 64. A coloring sheet having a first coloringsurface and second opposite surface, said sheet having a printedcoloring image on said first surface and wherein said image is printedwith an ink selected from the group consisting of a phosphorescent ink,a fluorescent ink, and an infrared ink.
 65. The coloring sheet of claim64 further comprising an additional printed coloring image printed onsaid second opposite surface, and wherein said additional printedcoloring image is printed with an ink selected from the group consistingof a phosphorescent ink, a fluorescent ink, and an infrared ink.
 66. Thecoloring sheet of claim 64 wherein said coloring sheet is wound in theform of a roll.
 67. The coloring sheet of claim 64 wherein said sheet iscomprised of paper.
 68. The coloring sheet of claim 64 wherein saidsecond opposite surface has a second coloring image printed thereon andsaid second coloring image is printed with an ink selected from thegroup consisting of a phosphorescent ink, a fluorescent ink, and aninfrared ink.
 69. A coloring sheet having a coloring surface and anopposite surface, said sheet having a printed coloring image on saidcoloring surface, and wherein said coloring image is comprised offaintly visible coloring lines that are substantially visuallyimperceptible when viewing the coloring surface at a non-coloringdistance but are visually perceptible when coloring the image.
 70. Thecoloring sheet of claim 69 wherein said printed coloring image isprinted with ink extender on said coloring surface.
 71. The coloringsheet of claim 70 wherein said image is also printed with ink.
 72. Thecoloring sheet of claim 69 wherein said printed image is printed on saidcoloring surface using a plate exposed with about a 5 to 10% screen. 73.The coloring sheet of claim 69 wherein said opposite surface has asecond coloring image printed thereon.
 74. The coloring sheet of claim73 wherein said second coloring image is substantially visuallyimperceptible when viewing the opposite surface with said secondcoloring image thereon at a non-coloring distance.
 75. A method ofcoloring a sheet in a coloring book comprising: providing a coloringbook having a plurality of coloring sheets bound along a margin to forma pad, wherein at least one coloring sheet has a top coloring surfacefacing the front of the book and a bottom opposite surface facing theback of the book; and wherein at least one sheet has a coloring imageprinted on said opposite surface such that the image is substantiallyvisually imperceptible at a non-coloring distance when viewing thecoloring surface but is perceptible when coloring the coloring surface;and coloring said coloring image on said coloring surface.
 76. Themethod of claim 75 wherein the coloring surface is substantially free ofmarkings where the coloring image is printed on the opposite surface soas not to interfere with a user perceiving the image when viewing thecoloring surface at a coloring distance away from the sheet.
 77. Themethod of claim 75 wherein said coloring book further comprises a topand bottom cover affixed to said pad.
 78. The method of claim 75 furthercomprising the step of providing written instructions for coloring thecoloring image.
 79. The method of claim 75 wherein said instructions areprovided on the coloring surface.
 80. A method of coloring a coloringsheet having a coloring image comprising: providing a coloring sheethaving a coloring image printed on a coloring surface that issubstantially visually imperceptible when viewing the coloring surfaceat a non-coloring distance using an incandescent white light source; andcoloring the coloring image on the coloring surface.
 81. The method ofclaim 80 wherein said coloring image is comprised of faintly visiblecoloring lines that are substantially visibly imperceptible at anon-coloring distance and further comprising the step of placing a darksheet of paper underneath said coloring sheet to enhance the visibilityof the coloring image when coloring.
 82. The method of claim 80 whereinsaid coloring image is printed with a yellow ink and further comprisingthe step of viewing the coloring image through a blue filter whencoloring.
 83. The method of claim 80 wherein said coloring image isprinted with an infrared ink and further comprising the step of viewingthe coloring image with an infrared light source when coloring.
 84. Themethod of claim 80 wherein said coloring image is printed with anultraviolet ink and further comprising the step of viewing the coloringimage with an ultraviolet light source when coloring.
 85. The method ofclaim 80 wherein said coloring image is printed with a phosphorescentink that is substantially visibly imperceptible in white light andfurther comprising the steps of illuminating the phosphorescent coloringimage so that the coloring image glows in the dark, and then coloringthe image in the dark while the phosphorescent ink is visible in thedark.